Picture frame



FIG. 1 is a perspective view of a picture frame showing my new design thereof;

FIG. 2 is a front plan view thereof;

FIG. 3 is a back plan view thereof;

FIG. 4 is a top plan view thereof

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a left side plan view thereof;

FIG. 7 is a right side plan view thereof; and,

FIG. 8 is a perspective view as seen from the top and left side thereof in an unassembled state. 

The ornamental design for a picture frame, as shown and described. 